X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;f=lib%2Fprefetch.h;h=4c9c716b81f9016d79def776d3f875a7825b111a;hb=81653e0f25be18c124e0ef66e631ad95138cd8cf;hp=5c675d172229551826cdb0c8399f7dcfd28848a9;hpb=0de3ca79be9e5111019982280f606fc084ab846a;p=libucw.git

diff --git a/lib/prefetch.h b/lib/prefetch.h
index 5c675d17..4c9c716b 100644
--- a/lib/prefetch.h
+++ b/lib/prefetch.h
@@ -1,32 +1,36 @@
 /*
- *	Sherlock Library -- Prefetch
+ *	UCW Library -- Prefetch
  *
- *	(c) 1997--2003 Martin Mares <mj@ucw.cz>
+ *	(c) 1997--2006 Martin Mares <mj@ucw.cz>
  *
  *	This software may be freely distributed and used according to the terms
  *	of the GNU Lesser General Public License.
  */
 
-#ifndef _SHERLOCK_PREFETCH_H
-#define _SHERLOCK_PREFETCH_H
+#ifndef _UCW_PREFETCH_H
+#define _UCW_PREFETCH_H
 
-#if defined(__athlon) || defined(__i686)
+#if defined(__k6)
+  /* K6 doesn't have prefetches */
 
+#elif defined(__athlon) || defined(__k8) || \
+      defined(__i686) || \
+      defined(__pentium4) || defined(__prescott) || defined(__nocona)
+
+#define HAVE_PREFETCH
 static inline void prefetch(void *addr)
 {
   asm volatile ("prefetcht0 %0" : : "m" (*(byte*)addr));
 }
 
 #else
-
-#if !defined(__k6)
 #warning "Don't know how to prefetch on your CPU. Please fix lib/prefetch.h."
 #endif
 
+#ifndef HAVE_PREFETCH
 static inline void prefetch(void *addr UNUSED)
 {
 }
-
 #endif
 
 #endif